-void SIMIX_pre_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, smx_host_t host);
-void SIMIX_pre_file_write(smx_simcall_t simcall,smx_file_t fd, sg_size_t size, smx_host_t host);
-void SIMIX_pre_file_open(smx_simcall_t simcall, const char* fullpath, smx_host_t host);
-void SIMIX_pre_file_close(smx_simcall_t simcall, smx_file_t fd, smx_host_t host);
-int SIMIX_pre_file_unlink(smx_simcall_t simcall, smx_file_t fd);
-sg_size_t SIMIX_pre_file_get_size(smx_simcall_t simcall, smx_file_t fd);
-sg_size_t SIMIX_pre_file_tell(smx_simcall_t simcall, smx_file_t fd);
-xbt_dynar_t SIMIX_pre_file_get_info(smx_simcall_t simcall, smx_file_t fd);
-int SIMIX_pre_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_size_t offset, int origin);
-int SIMIX_pre_file_move(smx_simcall_t simcall, smx_file_t fd, const char* fullpath);
-smx_action_t SIMIX_file_read(smx_process_t process, smx_file_t fd, sg_size_t size, smx_host_t host);
-smx_action_t SIMIX_file_write(smx_process_t process, smx_file_t fd, sg_size_t size, smx_host_t host);
-smx_action_t SIMIX_file_open(smx_process_t process, const char* fullpath, smx_host_t host);
-smx_action_t SIMIX_file_close(smx_process_t process, smx_file_t fd, smx_host_t host);
-int SIMIX_file_unlink(smx_process_t process, smx_file_t fd);
+smx_synchro_t SIMIX_file_read(smx_file_t fd, sg_size_t size, smx_host_t host);
+smx_synchro_t SIMIX_file_write(smx_file_t fd, sg_size_t size, smx_host_t host);
+smx_synchro_t SIMIX_file_open(const char* fullpath, smx_host_t host);
+smx_synchro_t SIMIX_file_close(smx_file_t fd, smx_host_t host);
+int SIMIX_file_unlink(smx_file_t fd, smx_host_t host);